While playing Trine 2, when a Unity notification (in my case, I press the mute button on keyboard and the notification was about the volume being set to 0) appears, it minimizes the game. What's worse is that after that, when I go back to the game, the Unity menu bar stays on top of the game and as if it weren't in fullscreen anymore.The other issue, that I think is related in a way, is that when you press alt in a game (which is a pretty common key), the Unity command menu is opened, causing the game to minimize again.